Klipsch R-115SW 800W Powered 15" SubwooferDepth is understanding.The Klipsch SW-115 subwoofer delivers bass response below 20 Hz. Whether it's the synthesized bass of an explosion or earthquake from a film or the extremely low true bass of a pipe organ or the distinct multiple low notes coming from a bass guitar, you will sit up and take notice of any and all extremely low frequencies.The SW-115's presence will be felt even in oversized rooms but its aesthetics allow it to blend within any setup or room size.Its front-firing 15-inch driver and slot port not only reinforces the large driver for extremely high output,